Work gauge support for shears



July.27, 1948. w. c. TUCKER WORK GAUGE SUPPORT FOR SHEARS 2 Sheets-Sheet 1 Filed March 25, 1945 m N I AM u& w a 4 IIIIII PM \w 4% July 27, 1948. w, c, TUCKER 2,446,146

WORK GAUGE SUPPORT FOR SHEARS Filed March 23, 1945 2 Sheets-Sheet 2 5.9 Z9? m 9 T I 3/ 5 a 57 '5 H j t Z G i 4 ca/vrea VALVE 2/ 3 54AM i 2 11. 355

6 EX. 52 29 15 I i 20 {9 me su /=4) 6 V /6 Z5 I 75 cr l v aze I 4 F 4 J? 7 A v I NVENTOR.

Patented July 27, 1948 WORK canon SUPPORT FOR SHEARS William Cl'luc'ker, Kenmore, N. Y.,' assignorto Buffalo Forge-Company; Buffalm -N. Y2

Application March 23, 1945; Seriall-No. 584,435

12 Claims. 1

This invention relates to lmachineslfor cutting baror rod stock into sections of selectediengths, and: particularly; to mechanism =forselectively positioning-the gage or stop: whichvdetermines the uniform lengthsinto which the stock may be divided. One may desire to: vary theses lengths from time to time; so thatathe stop or. gage .head shouldbeadjustablealong the path of travel of the stock into vdifferent limiting positions. Heretoforelthese adjustablestops were merely abutmentslagainstwhich the free end of the stock enga ed, andin the severinggoperation, the knives tendedtolflex theiree end of the stockabefore the stockwas completely severed; with resultant distortion of the stockfatl the end where the severance occurred.

An objectof thisinvention is to provide an improved gage or limitlstopior the rod or bar stock which is fed progressively between the knives; withwhich bending of the stock in the severing operation will be substantially prevented with which distortion of the 'stockduring a severing operation will'bereducedto a minimum; with, which the speed ofoperation need not betmaterially't reduced Lands which willbe relatively simple, compact; accurate and'eflicient.

Another object of the invention is 'to'provi'de an improvedmeasuring' means for ashea-ringor cutting machine; with: which the stock may be cut or severed into sections of selected andvariable lengths; with which distortion of' the stockby the cutting or" shearing operation will beprevented'; with which the severed sections wilr'be' automatically and fully" released-at the conclusion of the severing operation; with which the gage or limit stop will be automatically replacedin limiting position; and" which-willrequire no additional supervision bythe operator.

Other objects and" advantages'will be'apparent from the following description" of "one embodi-- ment of the invention, 'andthe"novel'features will be" particularly pointed out hereinafter in connection with the appended claims;

In' the accompanying drawings;

Fig. l is a side elevation, with portions broken away, of= limiting means constructed in accordancelwith this invention: andqapplied to a: bar cu'ttervor billet shear;

Fig. 2. isa. transverse, sectional elevation 'of the same, the sectionnbeingt taken approximately alongiethetline 2-2r0f Figal;

Fig. 3 is a sectional zelevationthrough-a bleeder valve forming r a part 1 ot the: :control;

F'ig', A1315 a sectional elevation :of :1 the hydraulic Fig. :5 is an elevation, partly in section, lof'the controlvalve for the fluid-actuatedimotor' tliat operates the stop or gage;

Fighfilis another sectional elevation'through thetcontrol valve; and

Fig. "7 is a piping diagramthatm'ay he emplayed.

In thetillustrated"embodiment of thefinvention, the severing mechanism is illustrated" rather diagrammatically as of the" knife or"s hear" type, which'include's an upright frameI-havingarela tivelyl fixed or lower knife 2; and an upper or relatively movable knife or cutter 3. Thisrcutte'r 3' is carried by a vertically movable memberw whichmoves back and forth tocarry the' knife 3" past" thefixecl knife 2' in the *manner that the blades of' ashear pass one another"to -she'ar or cut any stock that is disposed between them. --I'nasmuch as thshearing mechanism itself'may be of any suitable or desiredconstructiomit isshown only'diagrammaticallyg and it will" be 'understood that any mechanismformovingthe holdrl for the knife 3*maybe'emp1oyed; The stock, which Will pass overthe lowen knife 2 until the nea or advancing end' of the stock engages a suitable stop *or case head 1; After-the sto'ck5- has=been stopped in this manner, the upper"k1z1 lfe 3 is caused to approach'andpass inoverlapping relation, the lower bladedg duringmwlnch operation the stock is sheared by these knives or 7 blades '2 and 3i Since *the upperknife 3 v is of necessity slightly'at onesid'e of the lowen knife 2, iti-exerts a. bending force a on the free or advance endrtof the stock which also' tendswto lift the'afoilowing or" uncut'sendi" of the stock; If the 'stock ise held against: tilting. on the 4 lower: knife blade; 2', then the stoclcwillibe bent or distorted adjacent-that zone of th'e stockrwherethe cutting orwshearing OCCHI'S.

This distortion at the zone of severance often requirednspecia'l" and" additional machining. ;operations onthe severedsectioni to-restore .the'stock l to "its or'iginalw cross section before other :operations could-be performed thereon. In accordance 3v providing a shelf or wall 9 that extends a short distance along the under side of the stock 5 at the same side of the stock as the fixed knife 2, that is, at the side or face of the stock which is opposite from that first engaged by the movable knife 3. With such an arrangement, when the movable knife begins to shear the stock, the turning moment or bending force on the advanced or free end of the stock will be resisted bythe wall or shelf 9 with the result that the stock will be sheared without any bending of the stock, or dis-.

tortion due to bending of the stock, adjacent the line of severance.

After the knife 3 completes its severing operation, it is retracted and held in retracted POSi". tion until a new operation is initiated, and the severed stock piece then falls into or upon a which may be determined by the engagement of "the motor piston I'I, Fig. 4, with the end of the cylinder in which it operates.

The motor I5 includes a cylinder I8 in which the piston I'I reciprocates, and operating fluid is admitted through a pipe I3 to one end of the cylinder to -'-cause a retraction of the stop, and to the opposite chute or guide I0, by which it is conveyed away,

from the machine. It is desirable that this rele ase of the severed section of the stock be comnew in order that the severed section may fall freely upon the chute, and therefore the head or gage] is shifted in a manner and in a direction toremove the shelf 3 from beneath the advanced end of the stock.

' While the head or gage I may be shifted sidewise or laterally of the path of movement of the stock in orderto remove the wall or shelf 9 from engagement with the severed stock section, it is preferably shifted in a direction parallel to the direction of travel of the stock as it is fed into cutting position, such as into the dash line position A in Fig. 1, which automatically removes the wall or shelf 9 from beneath the severed stock While any suitable means may beemployed for shifting this gate or head I into and out of its effective position within the broadest conception of the invention, a very satisfactory and preferred control thereof is through a fluid actuated "motor I5. The gage or head 'I is carried by a plunger II which is mounted for reciprocation in a cylinder I2 on the upper part of a suitable carriage or support I3. This support is slidingly .mounted on a suitable frame I4 for movement in a direction parallel to the direction of feed of the stock 5, so as to position the gage or stop I normally in the desired position to limit the advance of the stock 5. This mounting is shown in Fig. 2 in which the carriage I3 is provided with rollers I31; and l3b which roll against edges of angular -members I4 in order that the carriage I3 may .nroll along the frame I4 toward and from the shear plates 2 and 3. Suitable means is provided for securing the support or carriage I3 in any of. the different adjusted positions into which it may be moved on the frame I4. In the illustrated example the carriage I3 is provided with a nut "I which extends under the upper frame member I4. A long screw I la is mounted in ibearings MD in the ends of the frame I4 and it extends parallel to the directionof the travel of the car-- .riage I3 and is threaded through the nut I3c. The outer end of the screw I4!) is provided with a hand wheel M0 by which the screw may be .turned, and since the screw is rotatably mounted in the bearings I4b and held thereby against endwise movement, the rotation of the screw will move the nut I30, and through it the carriage along the frame I4.

end of the cylinder through the pipe 20, to cause anadvance or positioning of the stop.

The pipes I3 and 20, Figs. 4 to 6, are connected to a control valve ZI of any suitable type, but that illustrated is disclosed, for example, in my prior Patent #2,344,907 and in U. S. Patent No. 1,486,304 issued March 11, 1924, to C. A. Ross, to which reference may be had for a more complete disclosure. In the Ross patent, however, the rocker is manually operated, whereas, in the present example, the rocker 22 is pivoted at 23 to the housing of the valve and power operated by remote control. This power operation is obtained from a piston 24 operating in a cylinder 25. The'piston 24 has a piston rod 26 extending out of the cylinder and having a universal connection 21 to one end of the rocker 22. The piston is operated in one direction by fluid pressure in one end of the cylinder 25, and that end of the cylinder is connected by a pipe 28 to an air supply pipe 2 9 having therein a bleeder port 30.

The pipe 29 is connected through the bleeder port 30 to a supply of operating fluid under pressure, such as compressed air. Section 29a of the pipe 29, at the same side of the bleeder port as the pipe 28, is connected to a bleeder valve 3|, see Fig. 3. When the valve 3| is opened to vent that end'of the pipe 29a, the pressure in pipe 28 and cylinder 25, will fall because the air escapes therefrom through valve 3| faster than it can pass through the port 30, and when that happens, the springs 32 in the valve 2| urge the rocker 22 counter-clockwise in Fig. 5 to depress the piston 24, which'serves to change the condition of the valve 2| in a manner which will be explainedpresently. When valve 3| is closed, the pressure in pipe 28 and cylinder 25 will build up and force piston 24 upwardly in fig. 5 to return the valve parts to the positions shown in Fig. 5.

The control valve 2I has four valve elements 33, 34, 35 and 36 which are all operated by the rocker 22. Each of the valve elements 33, 34, 35 and 36 is urged into closed position by a spring, similar to the spring 32 which operates the valve element 34 upwardly, but the springs operating the valve elements 33 and 34 are more powerful than those operating the valve elements 35 and 36 'so that when the pressure on the piston'24 is released, the rocker 22 will be moved counterclockwise in Fig. 5. The valve element 33 (Fig. 6) has a closure part 31 which controls a port 38 leading toan exhaust manifold 39. The valve element 34 has a closure portion 40 which controls a port 4| leading to achamber 42 that is in continuous communication with the pipe 20. The valve element 35"(Fig. 5) has a closure portion 43 manifold 1 to "the pipe 19; l Whenth'e rocker 22 1s -i- 5 controllih "a port Hl' leading to -the: exhaust Air for -=op'e-ratio'n ofthe I motorfi's supplied through pipe 45 t' --a-cha'mloer 46"? immediately' below the olosurepart dfl 'of the: valve element 362" I l 'Tlie clos'ure part 49 controls the -=passage 1 50 wh-i' opens intoa chamber 5 'leading' =:direotly the 'posi tion -sh'own in Fig. 5; both-valve elementsand M will be op mad or depressed; and the valve elements and- 3 6 released s'o that-they Will i be i in closed positions. Withthe valve elementlfl depressed 'into open 1 posit-ion; operating fluid will ente' valve 2 I throughpipe' 45; pass throughiport 48; around closure part through port li'nto the chamber 42; and-then pass into pipe zfl which leads t-o one end or the cylinder 18. F Thisuforces the piston 11 forwardly and holds the *gage hea'cl or limit stop int its "position shown in full lines in Fig. l to be engaged by the stock seawater is fed int'o "position between the knives." Since: 1 the valveelement 331s also in its open position, the pipe IJSJfromithe other end of the cylinder w, will communicate; througth-e" chamber-5.'I around closure part '31 and through port 38, withthe ex haus-t 'm'anifold 39, so that the air displaced' byrthe movement of-the piston-'11, in the manner just explained, can escape to exhaust.

Ifzl=nowthe bleeder-valve ill-isopened so as lto ventipipe 2 9a, the pressurebon piston 24'will -be released; 'and 'the springs: operating .valve "elemen-$ 33 andt34 will rock the rocker 22 counterclockwise in Fig; 5, with the result that valve elements 33? andi34- will'moveinto closed positions, and waive elements a 3 5:: and F 36; will be depressed into vopen positions. When 'valve element 33 closes ita disconnects the pipe-1 fi from the exhaust manifold iiiflgrand valve element 34=inrclosingouts offthe' fiowof fluid under 1 pressure 1 from the pipe *:t01the pipe 20. The movement of valve element 35': into the open position "connects the chamber flitozexhaust, sothat pipe 20'is then connected directly to fthe exhaust manifold: 39" throughxthe port, 'and: when the valve elementfi36 opens it connects chamber 51 that is; always in: communication withrpipe- 19, to thepassage which is always connectedzt-hrough port 45 with i the pipe; 4 5

pipe; 20;5 with the result that the piston l'l moves to the left inwEig. :4, retracts :the 'stopi or gage. head and disen'gages it from the end Ofl the severed stock sec-tion which abuts against it. l

lAny suitable =b1eeder valve 3| maybe employed, butxin the example i1lustrated. in1=l ig. 3, the pipe 29a opens into a chamber 52, and this chamber, ini turn, .is connected througha port 5 3 to: an exhausti-openingor port 54: A valve element 55' Els urgedz resiliently into sealing position: over" the portf53a' by a spring 56, so thattpressure'from pipe 29w. will supplement the .spring 1561- to keep the 130N153 normally closed; Y A -rod*5| is mountednn the =housing of the f valve; in endw-ise alinement Wi'th =p0r-t 53; for endw-ise movement toward; and from'n'the valve elementw55z A' spring .S'Biaotin'g betweena head 59von the rodf5! and a wall of the housing of valve 31; serves? to i normally keep: the rod -51 releva-tedfand: out of: contact with the valve elementz1551 If the head 591s depressed against the action of spring 58;:the lower orinner endof the rod 5T- w-i'll engage the valve e1em'ent 55 and open it lagainstithe action of the spring56- z-which vents that end of the pipe 29a; and keepsz'itlrvented lelongrgas the head f59i is "depressedi When-z presaun ies The bleeder valve: 3ilris-:mountedzonrthe cutter frame l. in a position for rthe-Jhead dSZ-to:horrengage'd'randL-depressed .by. alugififl carried by the operating member 4 that moves with" theiuppereor -10 movable knifez3, to ventwthatzend of the lpipe29a whomthe knife fi has' approximately begunwto overrun: the knife 2; This-would *be after; the'lfree end of the stock: ha-s beennnearlyqop entirelylsevere'dy There may be some timedelay after the 115 venting ofathe pipe i-elt before the piston l' 'l isioptaerated: to retract theigage I, whichmaylmakeiit possible for the valve 31 toibe operated slightlybee fore the severing" operation is scompletedw Thus the gage head'or stopl'lc willbe retractedtoirelease the" free end of the stock-after the free end ofwh'e stools has been severed; so that this severedistock sectionvcan fall upon 'thichutelll andisbescon veyedaway. During return on retraction 0f? the movable knife -3 the valve: 3] willa-berreleased-rand that end of the pipe 2911 again closed; with the result that pressure will again be :returnedltoithe pipe 201 170 cause amadvance 'orsreturn eof the gage heador stop 1 toii'tsiforwarirj position where-:it

limi-tsthev feeding movementofithelstoch 5.-

The pipe ZSaQbetWeen-the valve-3 I an'd the con trol Va1Ve 2-l isprovided-with a doubleduor doop section 6 l, as shown in- Fig.2- 1; lwhiohi is; imaide of wfleX-iblenpipe or *conduit', $023 that thersuppol'tr 13 maybe adjusted bodily along-the frame It to ..35 xproperly position the gage-head or stopel, without v interrupting the connection betweenathei-bleeder valve 31- and the control valve 211 The pipe-v29, belowtheybleeder port '30, iisconnected to the fluid pressure supplypipe 4'5i f f r It [is :believed that the operation ofithe; device will: be :apparent from the foregoing "description, but will he briefly summarize'clw With the parts arranged in the positions shown in full lines: in the drawings,- the stock 5 is ied'forwardly, between 5 the-knivesu2 and 3 until it engages against the gage" head or stop -,'l, at whichetime the-frlee or 7 advance end ofthe stock has overrun slightlylwith the wall 9 of flange 8, which is at then-opposite side oftthe stock from themovableknife 3: It is 50 w understood 1 that: before r this occurs, i the support l3- will beeshifted on the frame Minto a position in which the stop 1', when advanced,- 1 will limitlthe feeding'movement of-the stock 5 between the knivesi and.3 to such a positionthat whenthe stockislsevered by the shearingr action of -the knives 2:and-3, the severedsection will havetthe desired, predetermined length. 1

. The operator) then initiatesanoperationi off the cutteror" shearing-device, as zusual in: thattype "60 moi-machine; during which the knife head 4 descends,- carrying movable: knife -35 towards, l and then slightly passingmthe lower *or stationary knife 2. This severs the free endof the'stock 5, and during that operation the turning force ex- 'ertedwon the free end of the stock. by the-upper knife -3 which-tends to 'bend the free end of the stock downwardly; iniFigel, is opl osedby-the flange 8 of: the stop. Consequently; there will be a: minimum fofzibending, of the stock Stand hence "7 riof distortiont of the severed stock. Wheni the severing operation: has beennapproximately completed; the lug-ufifl will engage and depress the head r 59-01? bleeder valve- 3 I which vents the adjacent" end; of pipe 29a ia-nd thus releasestpressure on piston l fii The valve z-lthen:disconnectswtlie 7 operating fluid received through pipe 45 from the pipe 20, connects it instead to the pipe 19, and vents the pipe 20.

.This' causes a retraction of the gage head or stop I through motor l5. This retraction is sufficient to release the advance end of the severed section of the stop, and the severed section can then fall upon the chute l0. As the knife 3 moves upwardly, the bleeder valve 3| will be released so as to close that end of the pipe 29a, and thereupon pressure on piston 24 will be resumed, and the valve 2| operated to vent pipe l9 and restore pressure to the pipe 20, which causes a return of the stop I to its advanced or stop position shown in full lines in Fig. 1, ready to receive an end of the stock as the latter is fed forwardly between the knives.

. It will be understood that various changes in the detailsand arrangements of parts, which have been herein described and illustrated in order to explain the nature of the invention, may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.

; I claim:

1. Ina shear or cutter for bar or rod stock of the type having relatively movable shearing knives between which the bar or rod stock is fed for severing into selected lengths, that improvement for stopping the stock in proper severing position which comprises an end stop normally disposed in the path of movement of the stock in position to be abutted by the end of the stock after said stock has been fedbetween the knives to the selected extent,said stophaving a shoulder extending approximately at a right angle to said stop a short distance along that side of the adjacent stock end opposite from the movable knife and positively held at all times against movement in the direction of movement of the movable shearing knife to prevent flexing of the adjacent stock end during the severance by the knife movement, said stop with its shoulder being shiftable only in the general direction of feed of said stock to release the severed stock end and then back to stopping position, and means for shifting said stop to release a severed end after said severing operation. i

2. In a shear or cutter for bar orrod stock of the type having relatively movable shearing knives between which the bar or rod stock is fed for severing into selected lengths, that improvement for stop-ping the stock in proper severing position which comprises an end stop normally disposed in the path of movement of the stock in position to be abutted by the end of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending approximately at a right angle to said stop a short distance along that side of the adjacent stock end opposite from the movable knife and positively held at all times against movement in the direction of movement of the movable shearing knife to prevent flexing of the adjacent stock end during the severance by the knife movement, said stop with its shoulder being shiftable out of stopping position m-ainly in the direction of feed of the stock torelease the severed stock end and then back to stopping position, andmeans controlled by the relative movement of the knives after a severing operation has been performed for shifting said stop outtof stopping position to release the severed stock, and then back into stopping position during return of the knives to separated position.

3. In a, shear or cutter for bar or rod stock of the type having relatively movable shearing knives between which the bar orrod stock is fed for severing into selected lengths, that improvement for stopping the stock in proper severing position which comprises ,a stop normally disposed in the path of movement of the stock for engagement by the end of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending a short distance along that side of the adjacent stock end opposite from the movable knife to prevent flexing of the adjacent stock end during the severance by the knife movement, said stop beingshiftable out of stopping position torelease the severed stock end and then back to stopping position, fluid actuated .meansfor shifting said stop out of stopping position, and means controlled by the knives for rendering said fluid actuated means effective for shifting said stop out of stopping position at the completion of the severing operation of said knives and for causing the return of said stop to stopping position during the return of the knives to normal positions. l

4. In a shear or cutter for bar or rod stock of the type having relatively movable shearing knives between which the bar or rod. stock is fed for severing into selected lengths, that improvement for stopping the stock in proper severing position which comprises a stop normally disposed in the path of movement-of the stock in position to be abutted by the end of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending approximately at a right angle to said stop a short distance along that side of the adjacent stock end opposite from the movable knife and positively held at all times against movement in the direction of movement of the movable shearing knife to prevent flexing of the adjacent dependently shifting said stop relatively to said support in the direction of feed of the stock and bodily out of engagement with an abutting end portion of the stock in a direction approximately parallel to the direction of feed of the stock, whereby after a severing operation, said stop may be shifted in a-direction parallel to the direction of feed of the stock to release the severed stock end and then returned to a position to stop the stock moving into severing position. a

5. In a shear or cutter for bar or rod stock of the type having relatively movable shearing knives between which the barv or rod stock is fed for severing into selected lengths, that improvement for stopping the stock in proper severing position which comprises a stop normally disposed in the path of movement of the stock for engagement by the end of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending a short distance along that side of the adjacent stock end opposite from the movable knife to prevent flexing of theadjacent stock end during the severance by the knife movement, a support shiftable in the direction'of feed of said stock and mounting said stop for bodily 'movement therewith into and out of a position in which the stop will stop feeding of the stock in the proper position for severance:randiiuictactuated: means on saidrsupport and-operable r, to shiftzsaid stop on said support out; on engagement with the abutting .endrof i said stock so I as to :release "a severed stockaend-and then i return itvtovlimiting position for: 113119 stock as the "latter moves into position for-severance. t i i 6. Ina shear or cutterafor bar onrod stock of. the type :having relativelymovable shearing knives-between which the bar orrod stock isnfed for severing into selected lengths, that improvement 1 for stopping the stockin proper severing position which comprises a stop normally disposed in thepath ofmovement of the stock for engagement by the end-of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending a short distance along that side of the adjacent stock end opposite from the movable knife to prevent,ilexing of the adjacent stock end during the severance by the knife movement, a support shiftable in the direction of feed of said stock-and mountinglsaid stop for bodily movement therewith into-andout of a position in which the stop will stop feeding of the stock: in the properjpositionfor severance, fluid actuated meansonsaid support andoperable to shift said stop onsaid support out: of enagement with the abutting. endof said stock so as to release a severed stock-end and then return .it to limiting position for ,the, stock as the latter moves into position for' severance, and means rendered effective by the relative movement'of the knives for causing said'fluid actuated means toxmove said stop out of engagement with-the severed stock end at approximately the end of a severing operation, and for causing the return of the stop to stopping position during the return of the knives to initial positions.

'7. In a shear or cutter for bar or rod stock of the type havin relatively movable shearing knives between which the bar or rod stock is fed for severing into selected lengths, that improvement for stopping the stock in proper severing position which comprises a stop normally disposed in the path of movement of the stock for engagement by the end of the stock after said stock has been fed between the knives to the selected extent, said stop having a shoulder extending a short distance along that side of the adjacent stock end opposite from the movable knife to prevent flexing of the adjacent stock end during the severance by the knife movement, a support mounted for movement in a direction parallel to the axis of movement of said stock as the stock moves into severing position, means for securing said support in different positions of such movement, a fluid actuated motor on said support having a working member movable back and forth in a direction parallel to the axis of movement of said stock, a gage head connected to the working member and receiving and holding the free end of said stock when the stock is in proper severing position and limiting sidewise movement of the free end of the stock during its severing operation, and means controlled by said knives for operating said motor to normally hold said gage head in its advanced holding position, but operable to retract said head and release the severed stock end after a severin operation.

8. In a shear or cutter for bar or rod stock of the type having relatively movable shearing knives between which the bar or rod stock. is fed for severing into selected lengths, that'improvement for stopping the stock in proper severing position which comprises a stop normally disposed inthe path'ofvmovement of the stock1f0r engagement :by 'the end of ,the stock: after said stock has i been fed betwe'en-- the :knivesi to :the selected extents-aid stop having aqshoulclenextendingasshort distance alongthat side of the adjacent zstocki end opposite from the movable knifelto prevent fiexing of the, adjacent stock end duringther severance by the knife movemenha support mounted for movement in a; direction parallel to the axis of movement or said stock as the stock moves into. severing position means forsecuring: said support in different: positions" of suchmovement, a fluid' actuated'imotor' on said support having a workinggmember'movable back and forth. in a "direction parallel to .the .axisy-of movement of said stock, a gage headconnected to the working memberwand receiving and IhOld-r ing the free end 'of saidzstock'when the stookrisin proper severing position .and limitingl'sidewise movement of the :free end: of the stock: duringzits severing operation, and controlling: means for said motorhaving a control element disposed: in a position for engagement by the relativelyinov ing knife during a severing operation foreeausing the retraction of said head to releasethe severed stock. section, andxforr returning :the gages-head to stopping position during the return relative movementof the knife. i r i w 9.: In ashearor cutterfor bar or rodzstocka of thextype having. relatively movingrshearingiknivcs between which the stock is fed for severanceinto selected lengths, that: improvement for stopping the stock in the proper severing position: which comprises a. gage head disposed for: engagement by the end 1 of the stockxass. it :reaches the desired position for severance so as to thereby determine the length of the section to be severed, said gage head having a flange extending along that side of the free end of the stock towards which the movable knife moves in the severing operation, so as to prevent bending of the free end of the stock during a severing operation, a piston mounting said head for movement in the direction of feed of the stock and contra, and fluid actuated means for moving said piston and head in the direction of feed of the stock to release a severed stock end and then back into its former stopping position.

10. In a shear or cutter for bar or rod stock of the type having relatively moving shearing knives between which the stock is fed for severance into selected lengths, that improvement for stopping the stock in the proper severing position which comprises a gage head disposed in position to be abutted by the end of the stock as it reaches the desired position for severanceso as to thereby determine the length of the section to be severed, said gage head having a flange extending along that side of the free end of the stock towards which the movable knife moves in the severing operation, said gage head and flange being positively held at all times against movement in the direction of movement of the movable shearing knife so as to prevent bending of the free end of the stock during a severing operation, and means for shifting said gage head with its shoulder bodily out of stopping position mainly in the direction of feed of the stock to release the severed end of the stock at approximately the end of the severing operation, and for returning the head to stopping position before a new severing operation begins.

11. In a shear or cutter for bar or rod stock of the type having relatively moving shearing knives between which the stock is fed for severance into selected lengths, that improvement for stopping the stock'in the proper severing position which comprises a gage head disposed in position to be abutted by the'end of the stock as it reaches the desired position for severance so as'to thereby determine the length of the section to be severed, said gage head havin a flange extending along that side of the free end of the stock towards which the movable knife moves in the severing operation, said gage head and flange being positively held at all times against movement in the direction of movement of the movable shearing knife so as to prevent bending of the-free end of the stock during a severing operation, and means having a control element rendered effective by relative movement of said kn'ivesat approximately'the end of a severing operation for shifting saidhead with its shoulder bodily out of stopping position only in a di rection substantially perpendicular to the direction of movement of said movable knife to release the'severed end of the stock, and formturning the head to stopping position before a new-severing operation begins.

12. In a shear or cutter for bar or rod stock of the type having relatively moving shearing knives between which the stock isfed for severance into selected lengths, that improvement for stopping the stock in the proper severing position which comprises a gage head disposed in position to be abutted by the end of the stock as it reaches the desired position for severance so as to thereby determine the length of the section to be severed, said gage head having a flange extending along that side of the free end of the stock to- 12 wards which the movable knife moves in the severing operationyso as to prevent bending of the free end of the stock during a severing operation, and anelement mounting said head and movable in either direction only along the line of feed to position the head to stop the moving stock at any of a plurality of difierent posi'- tions, said mounting guiding said head ina separate, limited movement relatively to said ele-* ment, but in the same directions to enable lim-' ited movement of the head on said element in said direction'of feed of the stock away from its stopping position to release a severed end of the stock, and then back to its stopping position.'

WILLIAM C. TUCKER.

REFERENCES CITED UNITED STATES PATENTS Number Name Date I 345,359 Boehme July 13, 1886 1,141,644 McDonald June 1, 1915 1,169,333 McDonald Jan. 25, 1916 1,174,747 McDonald Mar. 7, 1916 1,690,503 Rhodes Novifi, 1928 1,979,413 Seft .'..1. Nov, 6, 1934 2,204,405 Dunlap June 11, 1940 FOREIGN PATENTS Number Country Date 399,923 Germany Aug. 13, 1924 419,111 Germany Sept. 19, 1925 

